OMAHA (DTN) -- Mayors along the Mississippi River have seen it all in the past few years -- the devastation of flooding one year to drought the next.

During a press conference Thursday, a group of 20 mayors announced the signing of a "memorandum of common purpose" with the U.S. Army Corps of Engineers to take a number of steps to collectively preserve the Mississippi River in their communities.

"The Mississippi River closed," said Tom Thompson, mayor of Grafton, Ill. "We had just finished recouping from a major flood in 2011 and in just a few months the flood waters ...

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